Simply defined, plasma treatment changes the surface energy of plastics to make them more amenable to secondary manufacturing processes. What began as a simple technique to improve material cleaning and etching, now gives plastic manufacturers the ability to functionalize, or establish significant hydrophobic, hydrophilic or adhesive qualities. Plasma treatment can actually enhance manufacturing yields by reducing defects caused by insufficient bonding of paints and other coatings. 

While plasma remains a newer concept in some industries, it has grown exponentially in the biotech arena.

Plasma builds a better bond

A leading maker of biotech labware contacted us to modify the surface of their pipette tips to form a more hydrophilic quality. They noted that the pipettes are used to transfer and aspirate milliliter amounts of liquids in the lab, yet were not allowing a reliable attachment to the liquid samples. Better adhesion was needed to improve testing results.

Our team took samples of the polystyrene (PS) pipettes for a plasma trial. As with many plastics, PS is not naturally “wettable”, and requires additional processing to increase surface energy (wetting) properties. After just a short exposure in the plasma chamber, we were able to increase the polarity of the devices. Our client now reports a much better liquid bond to the pipette tip, and more accurate lab measurements. Explore more low-pressure plasma applications in our Surface Modification Technical Paper.

Plasma in Biotech Practice

Beyond pipettes, plasma surface treatment has delivered superior results throughout biotech. We now help our clients with plasma treatment of: 

• Glass slides prior to silane deposition
• Balloon catheters prior to coating
• Filter media for enhanced wettability
• Oxygen delivery devices for hydrophobic properties
• Surgical catheters for improved biocompatibility. 

All this ― and more ―from a value-driven and green alternative to harsh chemical treatments. 

Want to learn how you can improve your manufacturing with plasma treatment? Connect with the Experts or submit a Design Worksheet for a custom quote!